condition	mean	min	max
4 h after light	20.67585	20.5795	20.7722
8 h after light	11.105	10.4244	11.7856
12 h after light	10.016525	9.63125	10.4018
4 h after dark	14.1814	12.2775	16.1535
8 h after dark	20.0879	19.6802	20.6933
12 h after dark	21.421333333333333	20.6648	22.1705